Where does “illegible” come from?

Illegible comes from Middle English in- prefixed to Latin legibilis (from legere, to read), with the prefix ultimately from Proto-Indo-European ne (not).

illegible (English): Not clear enough to be read; unreadable; not...

Definitions

  1. Not clear enough to be read; unreadable; not...

Ancestry of “illegible”, step by step

illegible traces back through two separate lines of ancestry.

via Catalan llegible

StepLanguageWordMeaning
1Catalanllegiblelegible
2Catalanllegirto read
3Latinlegeresecond-person singular future passive indicative...
4Latinlegōto collect, gather, bring together, catch
5Latinlēxa proposition or motion for a law made to the people by a magistrate, a bill
6Proto-Italiclēg-
7Proto-Indo-Europeanleǵ-s
8Proto-Indo-Europeanleǵ-to gather, collect, with derivatives meaning to...

via English legible

StepLanguageWordMeaning
1EnglishlegibleClear enough to be read; readable, particularly...
2Late Latinlegibilisthat can be read

Words derived from “illegible

Every word from Proto-Indo-European leǵ-Every word from Proto-Indo-European leǵ-sEvery word from Proto-Italic lēg-
illegible — Etymology, Origin & Word History | Etymology Explorer